File-cutting machine



(No Model.) '2 Sheets-Sheet 1. H. J. GOSLING.

v FILE CUTTING MACHINE. No. 365,469; Patented June 28, 1887.

N PEIERS. Phokol-ikhographen Walhlnghn. D.

(No Model.) 2 Sheets-Sheet H. J. GOSL ING. FILE CUTTING MACHINE.

No. 365,469. Patented June 28, 1887.

WITNESSES Q INVENTOR NITED STATES PATENT OFFICE.

. -HENRY J GOSLING, OF PHILADELPHIA, PENNSYLVANIA.

FILE-CUTTING MACHINE.

senezrrcrrrron forming part of Letters Patent No. 365,469, dated June28,1887. Application filed March 3, 1857. Serial No. 229.629. (Nomodel.)

Cutting Mechanism, of which the following is a full, clear, and exactdescription, reference being had to the annexed drawings, making parthereof.

the file comes underfthe chisel. The depth and rapidity of the strokeremain the, same for the whole length of the file being cut, but thecuts become gradually farther apart as the wider end of the fileapproaches the chisel. This desideratum has been accomplished before byother and more complicated and costly mechanism than mine. My object isto produce mechanism which will be simple, strong, and durable, whichwillyet accomplish the desired result and be easily operated.

The mechanism which I combine with a filecutting machine is of itselfold in the arts, and it is to its combination with afile-cutter and itsadaptation to the rest of the machine and the purposes of the inventionthat I limit my claim to novelty.

In cutting files the small end of the file is brought by the carriagefirst under the operation of the chisel, and at the beginning of thecutting I make the feed or motion of the. carriage slow, and by myimprovement I gradually increase the rapidity of the feed or the speedof the carriage as the wider or more bulky end of the file approachesthe chisel. I thus secure fine or close cutting at the small end andgradually widen the distance between the cuts toward the larger end ofthe file as the feed is increasing in speed under the regular strokes ofthe chisel.

My device is 'automatic in its operation.

I combine with the ordinary mechanism of a file-machine a pair ofcone-pulleys rigged with an automatic shifter to move the belt, whichshifter is operated by the motion of the carriage or file-feedingmechanism; but the nature of my mechanism. will fully appear from thefollowing description and claims.

In the drawings, Sheet 1 Figure 1 is a perspective view of my machinewith my improve ment attached. Sheet 2, Fig. 2 is a detached verticallongitudinal sectional view of thesame,

showing the method of combining my improvement with the machine; Fig. 3,an enlarged side view of the detaching mechanism, showing parts incross-section; Fig. 4, a detached plan view of the bed, carriage, andoperating V l devices; Fig. 5, an end view of the detaching My inventionrelates most particularly to' mechanism which will operate to graduatethe effect of the successive strokes'of the chiself in a file-cuttingmachine as the wider part of.

bar and guide; Fig. 6, an end view of the two cone-pulleys with theirbelt and shifters.

In my description I will not enter into detail as to the parts of thefile-cutting machine, because these parts are fully set forth in UnitedStates Letters Patent dated March 19, 1885, numbered 318,104, forfilecutting machine.

A is the base-block upon which the machine is set; E, the frame of themachine,-to which the operative parts are attached; 0, thevertically-vibrating plunger. The holder C is set in the lowerpart ofthe latter, and carries the chisel.

D is a lift pivoted to the frame at D; E, a treadle pivoted as shown,and connected with the liftD by rod E. The olfice of the lift is toraise the-plunger,so as to elevate the chisel and release the finishedfile.

F is a screw-threaded revolving bar, which engages in a half-worm in thelower face of block F. This block F is attached to the carriage G, whichbears the file being cut.

G is a catch upon the side of the carriage, which engages in a notch, G,in the lower edge of the traveling latch H.

H is a slotted guide-plate to direct the movement of latchH, and isprovided with an inner-shoulder, I, upon which latter the adjust-ablecam-piece 1 runs, and by which the cam-piece is thrown up to raise thelatch and release it from the catch G.

1" I are slots provided with set-screws to adjust the cam-piece backwardand forward on the latch, so that the latter may be thrown up at variouspoints in the traverse of the .carri'age G. The latch H is pivoted atits rear end to the block J, which travels to and fro in the guide-barJ. This guidebar J is bolted to the rear side of frame B. (See Fig. 3.)

J is a friction-roller set on the rear end of bar J.

K K are two cone-pulleys, their ends being set in opposite directions.-Iulley' K is ICO mounted upon shaft K, driven from a main l file hasjust finished its traverse under the driving-shaft, and pulley K ismounted upon a short shaft, L. A short traveling belt, M, from pulley Kdrives pulley K.

L is a beveled cog-wheel engaging with cogwheel L upon the end ofscrewthreaded rod F.

Mounted upon the block J is a short standard, N, and the block J andthis standard carry two belt-shifters, N N.

Ois acord,chain, orband sustaining a weight, 0. This cord passes overroller J and is attached to block J.

The raising of the plunger 0 raises an inner cam within the frame awayfrom the vibrating actuating mechanism and throws the plungertemporarily out of service. This mechanism is, however, fully describedin my previous patent above referred to.

\Vhen it is desired to cut a file by my improved device, the carriage Gis pushed back and the block J will be drawn back by the weight 0 untilthe belt M is near the smaller extremity of pulley K and near the largerend of pulley K. The catch G will also be engaged in notch G" of latchH. The carriage as it moves forward will draw latch H with it, andconsequently block J,lhus slowly shifting the belt toward the largerpart of pulley K and the smaller part of pulley K. This will graduallyincrease the speed of the latter, and consequently that of shaft L, rodF, and the motion of the carriage G. The latch H will thus be drawnthrough. guide-plate H until the campiece 1. runs up on shoulder I andraises the latch out of engagement with the catch G. The cam-piece is soadjusted that this action will occur at the period when the chisel. Theweight 0 then draws the block J and its connections back and returns thebelt M to its original position. Carriage G is then pushed back for arepetition of the operation.

If desired, the weight and cord may be dis pensed with and thebelt-shifting mechanism may be connected with the rear of carriage G,whereby when the carriage is pushed back by the operator the belt M willbe returned to the original position above referred to, and be againshifted by the forward movement of the carriage.

\Vhat I claim as new is- 1. In a file-cutting machine, the combinationof two cone-pulleys,-K K, belt-shifter N, and shaft L, geared to thecarriagedriving mechanism,said belt-shifting mechanism being connectedwith and actuated by the carriage, whereby the speed of the latter isvaried as it progresses in its traverse, substantially as described.

2. In a filecutting mechanism, the combination of two cone-pulleys, K K,belt'shifter N, shaft L, geared to the carriage-driving mechanism, saidbelt-shifting mechanism being connected with latch H, the latterengaging with carriage G, and being provided with cam 1, adapted to beraised by shoulder I to disengage latch H from the carriage, and weightand cord 0 O, to draw the belt-shifter back when latch H is disengagedfrom thcearriage, substantial] y as described.

HENRY J. cosLIno.

Witnesses:

GEORGE E. BUCKLEY, HENRY M'Ansn.

